feat: implement user authentication and login modal, refactor backend

web/backend/routes/articles.js

@@ -0,0 +1,81 @@
+import express from 'express';
+import { getNotifiedArticles } from '../services/redis.js';
+
+const router = express.Router();
+
+// Obtener artículos notificados
+router.get('/', async (req, res) => {
+  try {
+    const articles = await getNotifiedArticles();
+    const limit = parseInt(req.query.limit) || 100;
+    const offset = parseInt(req.query.offset) || 0;
+    
+    const sorted = articles.sort((a, b) => b.notifiedAt - a.notifiedAt);
+    const paginated = sorted.slice(offset, offset + limit);
+    
+    res.json({
+      articles: paginated,
+      total: articles.length,
+      limit,
+      offset,
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Buscar artículos en Redis
+router.get('/search', async (req, res) => {
+  try {
+    const query = req.query.q || '';
+    if (!query.trim()) {
+      return res.json({ articles: [], total: 0 });
+    }
+    
+    const searchTerm = query.toLowerCase().trim();
+    const allArticles = await getNotifiedArticles();
+    
+    // Filtrar artículos que coincidan con la búsqueda
+    const filtered = allArticles.filter(article => {
+      // Buscar en título
+      const title = (article.title || '').toLowerCase();
+      if (title.includes(searchTerm)) return true;
+      
+      // Buscar en descripción
+      const description = (article.description || '').toLowerCase();
+      if (description.includes(searchTerm)) return true;
+      
+      // Buscar en localidad
+      const location = (article.location || '').toLowerCase();
+      if (location.includes(searchTerm)) return true;
+      
+      // Buscar en precio (como número o texto)
+      const price = String(article.price || '').toLowerCase();
+      if (price.includes(searchTerm)) return true;
+      
+      // Buscar en plataforma
+      const platform = (article.platform || '').toLowerCase();
+      if (platform.includes(searchTerm)) return true;
+      
+      // Buscar en ID
+      const id = String(article.id || '').toLowerCase();
+      if (id.includes(searchTerm)) return true;
+      
+      return false;
+    });
+    
+    // Ordenar por fecha de notificación (más recientes primero)
+    const sorted = filtered.sort((a, b) => b.notifiedAt - a.notifiedAt);
+    
+    res.json({
+      articles: sorted,
+      total: sorted.length,
+      query: query,
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+export default router;
+